| Issuer: United States
Issue: 20th Universal Postal Congress Date: 1989 (1989 sheets) Block 1 (4, 2 x 2) 1, 1: 45c d=spacecraft leaving Earth 1, 2: 45c d=hovercar 2, 1: 45c d=moon rover 2, 2: 45c d=space shuttle docking |
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